Serena Williams Loses To Roberta Vinci In US Open Semifinals

Serena Williams US Open Semifinals
Serena Williams lost to Italy's Roberta Vinci in the 2015 US Open semifinals.
Getty.

Serena Williams was able to conquer a tough task by defeating her sister in the quarterfinals of the US Open, but she was unable to complete the single-calendar-year Grand Slam as she lost to  Roberta Vinci in the semifinal round today.

Williams, the top-seeded women’s player in the world, lost to the unseeded Vinci two sets to one. Vinci will face 26th-ranked Flavia Pennetta in the finals on Saturday at 3 p.m.

The younger Williams sister was the favorite to win the tournament after defeating Vitalia Diatchenko, Kiki Bertens, Bethanie Mattek-Sands, Madison Keys and her sister, Venus, before falling to Vinci.

Prior to the start of the US Open, Nike unveiled its on-court shoes for the 33-year-old tennis superstar, the NikeCourt Flare, in stores now. The shoe features a drop-in midsole and minimal upper construction, as well as a neoprene ankle cuff.

“I was having issues rolling my ankle,” Williams said in a statement in July. “So I wanted to create a shoe that would give me a lot of stability and make me a better player.”

Another Nike-sponsored tennis star, eighth-ranked Rafael Nadal, also lost in the year’s US Open, falling to 32nd-ranked Fabio Fognini in the third round of the tournament, three sets to two.